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TRF2436
www.ti.com
SLWS176 - APRIL 2005
High-Power Dual-Band (2.4-GHz to 2.5-GHz and 4.9-GHz to 5.9-GHz) RF Front-End
FEATURES
* * * * * Highly Integrated 802.11 a/b/g Radio Frequency Front End ASIC Fully Integrated Up/Down Converters, LNAs, PAs and T/R Switches Super Heterodyne Architecture for Superior Adjacent Channel Rejection Performance Differential LO and IF Interface for Enhanced Spurious/EMI Performance Common Frequency Plan uses a Single LO and Common IF for Single IF Filter for Both Bands * * * * * * * * * Integrated Temperature Compensated TX Power Detectors PA Bias Control Function Lead Free Package (TBD) Antenna Port OP1dB = +23 dBm Typical Antenna Port OIP3 = +33 dBm, Typical Frequency Range: 2.4 to 2.5 and 4.9 to 5.9 GHz Noise Figure: 4 dB ISM Band, 6 dB 5 GHz Bands Typical Typical Gain: 38 dB TX, 20dB RX IF = 374 MHz
MXB ABSEL V+LOB RSVD1 LOP LON IFP IFN MXA V+LOA
40 1 2 3 4 5 6 7 8 9 10 11
39 38
37
36
35 34
33
32 31 30 29 28 27 26 25 24 23 22
V+PA3B DETB DETN RFANTB V+LNABA RFANTA GND GND BYPOUT BYPIN
12 13
14
15
16 17
18
21 19 20
V+IFN
V+IFP
V+PA1A
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice.
V+PA2A
V+PA3A
BCOUT
V+IF
V+GEN
PABCA
RFA
Copyright (c) 2005, Texas Instruments Incorporated
PRODUCT PREVIEW
TBD PACKAGE (TOP VIEW)
TXGADJB
LOADJB
V+PA1B
V+PA2B
RXDGC
RSVD2
PABCB
BCIN
RFB
TR
TRF2436
SLWS176 - APRIL 2005
www.ti.com
DESCRIPTION
The TRF2436 is a fully integrated Dual Band Tri Mode Radio Frequency Front End (RFFE) designed specifically for use in 802.11 a/b/g applications. The TRF2436 is designed to perform RF up and down conversions in the unlicensed ISM and 4.9-5.9 GHz bands. The TRF2436 uses a common IF frequency for both bands, eliminating the need for additional IF filtering. Combined with the TI TRF2432 IF/IQ Transceiver/Synthesizer, the TRF2436 completes the TI WLAN two-chip radio. The TRF2436 incorporates all of the RF blocks for both the "b/g" and "a" bands except for low cost ceramic filters. The ASIC includes LNAs, PAs, mixers, bias circuitry, RX gain control, transmit coupler detectors, and T/R switches. High integration and internal RF matching enhances performance and greatly reduce external part count. The only external components needed (other than simple passives) for operation are RF filters and external low power DC switching FETs. Functional Block Diagram
V+ V+ PABCA RFA
BPF
MXA ABSEL
PA PA
TR
T/R
PRODUCT PREVIEW
NAME MXB ABSEL V+LOB RSVD1 LOP LON IFP IFN MXA 2
RFANTA
T/R
RXGC
T/R
T/R
IF
2
A/B
RFANTB
T/R A/B
2
LO
PA
V+
PABCB RFB
BPF
MXB DET
2
DEVICE INFORMATION
TERMINAL FUNCTIONS
TERMINAL NO. 1 2 3 4 5 6 7 8 9 I/O I/O I I I I I/O I/O I/O TYPE RF SE Digital Power RF Dif. RF Dif. RF Dif. RF Dif. RF SE DESCRIPTION B band RF Input/Output to mixer. 50- single ended. Do not apply DC. Band select pin. HIGH = A-band. LOW = B-band. B band LO amplifier bias +3.3V Not connected for normal operation. Leave Open. LO input (differential) Positive, AC coupled LO input (differential) Negative, AC coupled IF input/output (differential) Positive, DC coupled, typical DC Voltage is 2.6V IF input/output(differential) Negative, DC coupled, typical DC Voltage is 2.6V A band RF Input/Output to mixer. 50- single ended. Do not apply DC.
TRF2436
www.ti.com
SLWS176 - APRIL 2005
DEVICE INFORMATION (continued)
TERMINAL FUNCTIONS (continued)
TERMINAL NAME V+LOA V+IF V+IFP V+IFN RFA V+PA1A V+GEN V+PA2A PABCA V+PA3A BCOUT BYPIN BYPOUT GND RFANTA V+LNABA RFANTB DETN DETP V+PA3B V+PA2B BCIN PABCB V+PA1B RSVD2 RFB RXDGC TR LOADJB TXGADJB NO. 10 11 12 13 14 15 16 17 18 19 20 21 22 23, 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 I/O I I I I I/O I I I O I O I/O I I/O O O I I I I I/O I I TYPE Power Power Power Power RF SE Power Power Power Analog Analog Analog RF SE Power RF SE Analog Analog Power Power Analog Power RF SE Digital Digital DESCRIPTION A band LO amplifier bias +3.3V IF amplifier bias +3.3V. IFP amplifier bias +3.3V. IFN amplifier bias +3.3V. A Band RF Input/Output to PA/LNA. 50- single ended. AC coupled. A band Power amplifier bias +3.3V. DC Bias Control Bias +3.3V. A band Power amplifier bias +3.3V. A band PA Bias Control Input A band Power amplifier bias +3.3V. Bias Control Output. DC Bias Bypass Input DC Bias Bypass Output A band RF in/out to antennas. AC coupled. A and B Band LNA bias +3.3V. B band RF in/out to antennas. AC coupled. Negative RF power detector output Positive RF power detector output. B band Power amplifier bias +3.3V. B band Power amplifier bias +3.3V. Bias control input B band PA Bias Control Input B band Power amplifier bias +3.3V. Not Connected for normal operation. Leave Open. B band RF Input/Output to PA/LNA. 50- single ended. AC coupled. Rx Gain Control. HIGH = minimum gain. LOW = maximum gain Transmit/Receive mode control. HIGH = transmit. LOW = receive. Not connected for normal operation. Leave Open. B band LO amp bias adjust. Not connected for normal operation. Leave open. PAB Amplifier bias adjust. Connect to ground
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
UNIT DC supply voltage, VCC DC supply current, ICC RF input power Digital input voltage, VID Junction temperature, TJC Thermal resistance junction-to-case, JC Operating temperature, TA Storage temperature, Tstg Lead temperature 40 sec maximum Any port and any mode 0 to 6.9 V 600 mA +10 dBm -0.3 V to 5 V 175C 35C/W -20C to +85C -40C to +105C +220C
3
PRODUCT PREVIEW
TRF2436
SLWS176 - APRIL 2005
www.ti.com
DC CHARACTERISTICS
TYP ratings are at 25C and VCC = 3.3 V, MIN and MAX ratings are over operating free-air temperature and voltage ranges (unless otherwise noted)
PARAMETER VCC ICC Supply votlage Total supply current TEST CONDITIONS Specification compliant B Band, RX Mode A Band, RX Mode B Band, TX Mode, Max PABC input A Band, TX Mode, Max PABC input VIH VIL IIH IIL High-level input voltage Low-level input voltage High-level input current Low-level input current 100 1.7 0.5 300 -50 MIN 2.7 TYP 3.3 65 80 410 450 MAX 4.2 105 120 520 550 UNIT V mA mA mA mA V V A A
RECEIVER CHARACTERISTICS
TR = Low, 2dB base band filter loss in RX band, MIN, TYP, and MAX rating are at 25C and VCC = 3.3 V (unless otherwise noted)
PARAMETER fIRF fLO fIF G RF input frequency LO input frequency IF input frequency Gain B Band High Gain Mode RXGC=LOW A Band High Gain Mode RXGC=LOW G Gain step size B Band Low Gain Mode RXGC=HIGH A Band Low Gain Mode RXGC=HIGH Noise figure Input P-1dB B Band. Max Gain A Band. Max Gain B Band High Gain Mode RXGC=LOW B Band Low Gain Mode RXGC=HIGH A Band High Gain Mode RXGC=LOW A Band Low Gain Mode RXGC=HIGH Input 3rd order intercept point B Band High Gain Mode RXGC=LOW B Band Low Gain Mode RXGC=HIGH A Band High Gain Mode RXGC=LOW A Band Low Gain Mode RXGC=HIGH RF input return loss LNA out return loss RF Mixer input MX return loss 4 Z = 50 Both Bands, Both Gain modes Z = 50 Both Bands, Both Gain modes Z = 50 Both Bands -22 -16 -6 4 -12 -6 8 9 10 -18 -13 -2 8 -8 -3 -16 17 18 B band A band B band A band TEST CONDITIONS MIN 2400 4900 2774 2637 374 19 23 25 15 4 6 -13 5 7.5 TYP MAX 2500 5900 2874 3137 UNIT MHz MHz MHz MHz MHz dB dB dB dB dB dB dBm dBm dBm dBm dBm dBm dBm dBm dB dB dB
PRODUCT PREVIEW
TRF2436
www.ti.com
SLWS176 - APRIL 2005
RECEIVER CHARACTERISTICS (continued)
TR = Low, 2dB base band filter loss in RX band, MIN, TYP, and MAX rating are at 25C and VCC = 3.3 V (unless otherwise noted)
PARAMETER Output return loss LO at MX leakage LO at IF leakage Gain flatness full band Gain flatness / 22 MHz Gain settling time RF to RFANT isolation B band A Band (5274-6274MHz) Both bands B band A band Both bands Full range to within 0.5 dB final. All bands In Band: B Band High Gain Mode RXGC=LOW In Band: B Band Low Gain Mode RXGC=HIGH In Band: A Band High Gain Mode RXGC=LOW In Band: A Band Low Gain Mode RXGC=HIGH 0.3 30 5 25 35 TEST CONDITIONS Measured into 200 differential MIN 10 -30 -30 -40 1 2 TYP MAX UNIT dB dBm dBm dBm dB dB dB s dB dB dB dB
TRANMITTER CHARACTERISTICS
TR = High, 2dB base band filter loss in RX band, MIN, TYP, and MAX rating are at 25C and VCC = 3.3 V (unless otherwise noted)
PARAMETER fIF fORF fLO G IF input frequency RF output frequency LO input frequency Gain Output 1 dB gain compression B band A band B band A band B Band A Band B band. max PABC input A band. max PABC input 5150 - 5350 MHz Max PABC input, V+PA = 2.9V min, Other VCC = 2.7V min Output 3rd order intercept Noise figure IF input return loss Mixer output return loss MX RF input return loss RF RFANT return loss LO leakage at MX Gain flatness full band Gain flatness / 22 MHz PA harminics B band A band Both bands Measured into 200 differential Z = 50 both bands Z = 50 both bands Z = 50 both bands B band A band (5274-6274MHz) B band A band Both bands Both bands CW at P1dB -20 8 10 8 6 -35 -35 1 2 2400 4900 2774 2637 37 40 22 20.5 20.5 40 43 23.5 22.5 22.5 TEST CONDITIONS MIN TYP 374 2500 5900 2874 3137 MAX UNIT MHz MHz MHz MHz MHz dB dB dBm dBm dBm
32 30
35 32.5 8
dBm dBm dB dB dB dB dB dBm dBm dB dB dB dBc 5
PRODUCT PREVIEW
TRF2436
SLWS176 - APRIL 2005
www.ti.com
TRANMITTER CHARACTERISTICS (continued)
TR = High, 2dB base band filter loss in RX band, MIN, TYP, and MAX rating are at 25C and VCC = 3.3 V (unless otherwise noted)
PARAMETER RFANT to RF isolation PA Off Isolation RF to RFANT PA Turn On Time PA Turn Off Time PA droop PA Bias Control Input Range (PABC) B band A band In band: both bands To within 0.5dB max power To within -20dB max power From max power after turn-on time, Maximum on duration is 200 ms Max Current corresponds to max PA bias state 50 0.2 0.2 0.5 TEST CONDITIONS MIN TYP 50 50 MAX UNIT dB dB dB s s dB mA
COMMON ELECTRICAL CHARACTERISTICS
MIN, TYP, and MAX ratings are at 25C and VCC = 3.3 V (unless otherwise noted)
PARAMETER TR_SEL switch time TEST CONDITIONS Gain within 0.5dB. Not Including PA ramp time Reference to 100 differential Measured to 100 differential at 25C Differential -1 6 200 100 MIN TYP 0.3 MAX 1 1 5 UNIT s s dBm
VDETP-VDETN (mV)
PRODUCT PREVIEW
6
AB_SEL switch time LO input power LO input return loss IF port impedance LO port impedance
TYPICAL CHARACTERISTICS
A Band Detector Output
1000
100
10
25C
1
-25C 85C
0.1 0 5 10 Pout(dBm) 15 20 25
Figure 1. A Band Detector Output
TRF2436
www.ti.com
SLWS176 - APRIL 2005
TYPICAL CHARACTERISTICS (continued)
B Band Detector Output
1000
100 VDETP-VDETN (mV)
10
25C -25C
1
85C
-10-5 0 5 10152025 Pout(dBm)
Figure 2. B Band Detector Output
7
PRODUCT PREVIEW
0.1
TRF2436
SLWS176 - APRIL 2005
www.ti.com
APPLICATION INFORMATION
PIN 1
PIN 1
PRODUCT PREVIEW
8
Figure 3. Package Dimensions
TRF2436
www.ti.com
SLWS176 - APRIL 2005
APPLICATION INFORMATION (continued)
Figure 4. Package Dimensions (Lead Free)
9
PRODUCT PREVIEW
TRF2436
SLWS176 - APRIL 2005
www.ti.com
APPLICATION INFORMATION (continued)
PIN 1
PRODUCT PREVIEW
Package Description
6mm x 6mm LPCC40 Pin
10
Figure 5. Recommended PCB Layout
W2 P
W1
D1 D2
Feed Direction
Tape and Reel specifications defined per EIA-481-1A and EIA-481-2A. Parts per Reel
3500
Pitch P (mm)
12
Tape Width W1 (mm)
16
Reel Size D (Inches)
13
Reel Width W2 (mm)
18.2
Hub Dia. D2 (mm)
102
Figure 6. Tape and Reel Specifications
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